JP5574392B1 - 磁気ディスク用ガラス基板、磁気ディスク - Google Patents

磁気ディスク用ガラス基板、磁気ディスク Download PDF

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Publication number
JP5574392B1
JP5574392B1 JP2014519114A JP2014519114A JP5574392B1 JP 5574392 B1 JP5574392 B1 JP 5574392B1 JP 2014519114 A JP2014519114 A JP 2014519114A JP 2014519114 A JP2014519114 A JP 2014519114A JP 5574392 B1 JP5574392 B1 JP 5574392B1
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Prior art keywords
glass substrate
magnetic disk
magnetic
polishing
radius
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JP2014519114A
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Japanese (ja)
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JPWO2014051152A1 (ja
Inventor
武良 高橋
政明 植田
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Hoya Corp
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Hoya Corp
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73921—Glass or ceramic substrates

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
JP2014519114A 2012-09-28 2013-09-30 磁気ディスク用ガラス基板、磁気ディスク Active JP5574392B1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014519114A JP5574392B1 (ja) 2012-09-28 2013-09-30 磁気ディスク用ガラス基板、磁気ディスク

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2012218706 2012-09-28
JP2012218706 2012-09-28
JP2014519114A JP5574392B1 (ja) 2012-09-28 2013-09-30 磁気ディスク用ガラス基板、磁気ディスク
PCT/JP2013/076614 WO2014051152A1 (ja) 2012-09-28 2013-09-30 磁気ディスク用ガラス基板、磁気ディスク

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2014099972A Division JP6089001B2 (ja) 2012-09-28 2014-05-13 磁気ディスク用ガラス基板、磁気ディスク

Publications (2)

Publication Number Publication Date
JP5574392B1 true JP5574392B1 (ja) 2014-08-20
JPWO2014051152A1 JPWO2014051152A1 (ja) 2016-08-25

Family

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Family Applications (2)

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JP2014519114A Active JP5574392B1 (ja) 2012-09-28 2013-09-30 磁気ディスク用ガラス基板、磁気ディスク
JP2014099972A Active JP6089001B2 (ja) 2012-09-28 2014-05-13 磁気ディスク用ガラス基板、磁気ディスク

Family Applications After (1)

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JP2014099972A Active JP6089001B2 (ja) 2012-09-28 2014-05-13 磁気ディスク用ガラス基板、磁気ディスク

Country Status (6)

Country Link
US (3) US9583128B2 (enExample)
JP (2) JP5574392B1 (enExample)
CN (2) CN104603875B (enExample)
MY (2) MY198411A (enExample)
SG (2) SG11201501457VA (enExample)
WO (1) WO2014051152A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022181715A1 (ja) * 2021-02-24 2022-09-01 Hoya株式会社 磁気ディスク用基板、磁気ディスク、円環形状基板、および磁気ディスク用基板の製造方法

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY198411A (en) * 2012-09-28 2023-08-28 Hoya Corp Magnetic-Disk Glass Substrate and Magnetic Disk
US9595283B2 (en) * 2012-12-29 2017-03-14 Hoya Corporation Glass substrate for magnetic disk and magnetic disk
CN108847256B (zh) * 2013-02-22 2020-04-03 Hoya株式会社 圆环状基板、磁盘用基板及其制造方法、磁盘及其制造方法
US9595286B2 (en) * 2013-03-01 2017-03-14 Hoya Corporation Glass substrate for magnetic disk and magnetic disk
US10032472B2 (en) * 2014-03-31 2018-07-24 Hoya Corporation Magnetic-disk glass substrate
JP6020754B1 (ja) * 2015-12-25 2016-11-02 旭硝子株式会社 磁気記録媒体用ガラス基板、磁気記録媒体
WO2020021705A1 (ja) * 2018-07-27 2020-01-30 Hoya株式会社 ガラス基板の製造方法及び磁気ディスクの製造方法
JP6975862B2 (ja) 2018-08-07 2021-12-01 Hoya株式会社 磁気ディスク用基板及び磁気ディスク
US11664050B2 (en) 2021-10-05 2023-05-30 Western Digital Technologies, Inc. Tuned edge profile of a disk substrate for use in magnetic recording media

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008094982A (ja) * 2006-10-12 2008-04-24 Kao Corp メモリーハードディスク基板用研磨液組成物
JP2009134802A (ja) * 2007-11-29 2009-06-18 Furukawa Electric Co Ltd:The 磁気ディスク用ガラス基板および磁気ディスク装置
JP2009151881A (ja) * 2007-12-21 2009-07-09 Hoya Corp 磁気ディスク用ガラス基板、磁気ディスクおよび磁気ディスク用ガラス基板の製造方法
JP2009157968A (ja) * 2007-12-25 2009-07-16 Hoya Corp 磁気ディスク用ガラス基板の製造方法

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DE19850744C1 (de) * 1998-11-04 2000-10-05 Schott Glas Verwendung von Gläsern zur Herstellung von Festplattensubstraten
JP2002100031A (ja) * 2000-09-26 2002-04-05 Hoya Corp 磁気記録媒体用ガラス基板、及び磁気記録媒体
JP4274708B2 (ja) 2001-05-14 2009-06-10 Ｈｏｙａ株式会社 磁気記録媒体用ガラス基板及びその製造方法
JP2006079800A (ja) * 2004-08-11 2006-03-23 Showa Denko Kk 磁気記録媒体用シリコン基板及びその製造方法並びに磁気記録媒体
JP2006092722A (ja) * 2004-08-27 2006-04-06 Showa Denko Kk 磁気ディスク用基板および磁気ディスクの製造方法
JP2006099945A (ja) * 2004-08-30 2006-04-13 Showa Denko Kk 磁気記録媒体用ガラス基板および磁気記録媒体
CN101010734A (zh) 2004-08-30 2007-08-01 昭和电工株式会社 用于磁记录介质的玻璃基底以及磁记录介质
JP4545714B2 (ja) * 2005-07-08 2010-09-15 昭和電工株式会社 磁気記録媒体並びに磁気記録再生装置
SG10201501752PA (en) * 2007-02-20 2015-05-28 Hoya Corp Magnetic disc substrate, magnetic disc, and magnetic disc device
CN101611444B (zh) * 2007-02-20 2012-10-10 Hoya株式会社 磁盘用基板、磁盘以及磁盘装置
JP4952311B2 (ja) 2007-03-14 2012-06-13 コニカミノルタオプト株式会社 情報記録媒体用ガラス基板及び磁気記録媒体
JP4860580B2 (ja) * 2007-09-07 2012-01-25 Ｈｏｙａ株式会社 磁気ディスク用基板及び磁気ディスク
JP2010257562A (ja) 2009-03-30 2010-11-11 Hoya Corp 磁気ディスク用基板及びその製造方法
MY198411A (en) * 2012-09-28 2023-08-28 Hoya Corp Magnetic-Disk Glass Substrate and Magnetic Disk
US9595283B2 (en) * 2012-12-29 2017-03-14 Hoya Corporation Glass substrate for magnetic disk and magnetic disk
CN108847256B (zh) * 2013-02-22 2020-04-03 Hoya株式会社 圆环状基板、磁盘用基板及其制造方法、磁盘及其制造方法
US9595286B2 (en) * 2013-03-01 2017-03-14 Hoya Corporation Glass substrate for magnetic disk and magnetic disk

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008094982A (ja) * 2006-10-12 2008-04-24 Kao Corp メモリーハードディスク基板用研磨液組成物
JP2009134802A (ja) * 2007-11-29 2009-06-18 Furukawa Electric Co Ltd:The 磁気ディスク用ガラス基板および磁気ディスク装置
JP2009151881A (ja) * 2007-12-21 2009-07-09 Hoya Corp 磁気ディスク用ガラス基板、磁気ディスクおよび磁気ディスク用ガラス基板の製造方法
JP2009157968A (ja) * 2007-12-25 2009-07-16 Hoya Corp 磁気ディスク用ガラス基板の製造方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022181715A1 (ja) * 2021-02-24 2022-09-01 Hoya株式会社 磁気ディスク用基板、磁気ディスク、円環形状基板、および磁気ディスク用基板の製造方法
JPWO2022181715A1 (enExample) * 2021-02-24 2022-09-01
JP7467759B2 (ja) 2021-02-24 2024-04-15 Hoya株式会社 磁気ディスク用基板、磁気ディスク、円環形状基板、および磁気ディスク用基板の製造方法
JP2024099538A (ja) * 2021-02-24 2024-07-25 Hoya株式会社 磁気ディスク用基板、磁気ディスク、円環形状基板、および磁気ディスク用基板の製造方法
US12266389B2 (en) 2021-02-24 2025-04-01 Hoya Corporation Magnetic disk substrate, magnetic disk, annular-shaped substrate, and method for manufacturing magnetic disk substrate

Also Published As

Publication number Publication date
MY171392A (en) 2019-10-10
CN106098085B (zh) 2019-07-02
MY198411A (en) 2023-08-28
SG10201605879PA (en) 2016-08-30
SG11201501457VA (en) 2015-04-29
JP2014160539A (ja) 2014-09-04
JP6089001B2 (ja) 2017-03-01
US10290315B2 (en) 2019-05-14
JPWO2014051152A1 (ja) 2016-08-25
US9583128B2 (en) 2017-02-28
US20150262604A1 (en) 2015-09-17
US20170140785A1 (en) 2017-05-18
US11094344B2 (en) 2021-08-17
CN106098085A (zh) 2016-11-09
CN104603875A (zh) 2015-05-06
WO2014051152A1 (ja) 2014-04-03
US20190221233A1 (en) 2019-07-18
CN104603875B (zh) 2016-07-06

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